Pavement planing method and apparatus
AssigneeThe Gurries Company
InventorRaymond A. Gurries
Life of this patent
Estimating the term…
Abstract
Asphalt or concrete pavement is removed from a road bed by an elongated cutter blade that extends in a downward and forward direction along a cutting plane to a cutting edge. The cutting plane forms an acute angle of between 45.degree. and 55.degree. with the surface of the pavement. The cutter blade is intermittently driven with a force parallel to the cutting plane in the forward direction while the cutting edge penetrates the pavement to drive the cutter blade incrementally in a forward direction and plane off the pavement in a chisel-like manner. A source of vibrations is connected to one end of plural spaced apart resonant beams. At the other end, the beams drive the cutter blade.
Claims30
A pavement planer comprising:
- a transversely elongated cutter blade disposed at an acute angle between 45.degree. and 55.degree. to the surface of a pavement, the cutter blade extending in a downward and foward direction along a cutting plane to a cutting edge that lies in the cutting plane;
- a support frame;
- means for mounting the cutter blade on the support frame to permit reciprocation approximately in the cutting plane;
- means mounted on the support frame for intermittently applying a unidirectional force at sonic frequency to the cutter blade parallel to the cutting plane in the forward direction;
- and
- means for continuously transporting the frame in the forward direction while applying the unidirectional force to advance the cutter blade incrementally in the forward direction when the cutter blade engages a pavement.
A method of removing pavement on a road bed comprising the steps of:
- holding in contact with the pavement a transversely elongated cutter blade that extends in a downward and forward direction along a cutting plane to a transversely elongated cutting edge such that the cutting plane forms an acute angle with the surface of the pavement of between 45.degree. and 55.degree.;
- engaging the pavement with the cutter blade such that the cutting edge penetrates the pavement;
- and
- intermittently driving the cutter blade at sonic frequency with a force parallel to the cutting plane in the forward direction while the cutting edge penetrates the pavement to drive the cutter blade incrementally in the forward direction and in a chisel like manner plane off the pavement.
Apparatus for performing work on a medium, the apparatus having a support frame;
- means for continuously transporting the support frame in a forward direction;
- an elongated force transmitting member mounted on the support frame at an acute angle so the top of the member lies forward of the bottom of the member;
- a vibration generator connected to the top of the member to cause vibrations at the bottom of the member;
- and a tool facing in the forward direction coupled to the bottom of the member, wherein the improvement comprises:
- a support frame having an upright support beam with a top and a bottom;
- a forwardly-projecting support beam having a front and a back, the back of the forwardly-projecting support beam being attached to the top of the upright support beam to form a junction;
- and
- a strut having a first end attached to the front of the forwardly-projecting support beam and a second end attached to the bottom of the upright support beam such that the strut is approximately parallel to the force transmitting member, the upright support beam having a larger mass per unit length than the forwardly projecting support beam and the strut, the bottom of the support beam and the tool lying near the upright support beam.
Dependencies are inferred from the claim text.